public class Maze {
	private int _n; // number of rows
	private int _m; // number of columns
	protected char[][] mat = null;

	public Maze(int n, int m) {
		this._n = n;
		this._m = m;
		mat = new char[_n][_m];
	}

	public int get_n() {
		return _n;
	}

	public void set_n(int _n) {
		this._n = _n;
	}

	public int get_m() {
		return _m;
	}

	public void set_m(int _m) {
		this._m = _m;
	}
}
